15x-9=8x+4+4x+8

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Solution for 15x-9=8x+4+4x+8 equation:


Simplifying
15x + -9 = 8x + 4 + 4x + 8

Reorder the terms:
-9 + 15x = 8x + 4 + 4x + 8

Reorder the terms:
-9 + 15x = 4 + 8 + 8x + 4x

Combine like terms: 4 + 8 = 12
-9 + 15x = 12 + 8x + 4x

Combine like terms: 8x + 4x = 12x
-9 + 15x = 12 + 12x

Solving
-9 + 15x = 12 + 12x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-12x' to each side of the equation.
-9 + 15x + -12x = 12 + 12x + -12x

Combine like terms: 15x + -12x = 3x
-9 + 3x = 12 + 12x + -12x

Combine like terms: 12x + -12x = 0
-9 + 3x = 12 + 0
-9 + 3x = 12

Add '9' to each side of the equation.
-9 + 9 + 3x = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 12 + 9
3x = 12 + 9

Combine like terms: 12 + 9 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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